Examine the statements below and choose the correct answer:
1.
| Assertion (A): | Saliva contains the enzyme pepsin. |
| Reasoning (R): | Pepsin helps in the digestion of lipids. |
2.
| Assertion (A): | Diffusion does not meet the high energy requirements of the multicellular organisms. |
| Reasoning (R): | Diffusion is a quick process but can only occur at the surface of the body |
3.
| Assertion (A): | Rings of cartilage are present in the trachea. |
| Reasoning (R): | They ensure that the air-passage does not collapse. |